JP4818936B2 - 細胞の培養方法およびその利用 - Google Patents
細胞の培養方法およびその利用 Download PDFInfo
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Description
本明細書は、本願の優先権の基礎である日本国特許出願、特願2005‐000747号の明細書および/または図面に記載される内容を包含する。
本発明の製造方法で生産される抗体としては、ヒト、マウス、ラット、ハムスター、ウサギ、サル等の動物由来のモノクローナル抗体だけでなく、キメラ抗体、ヒト人化抗体、bispecific抗体など人為的に改変した遺伝子組み換え型抗体も含まれる。また、抗体の免疫グロブリンクラスは特に限定されるものではなく、IgG1、IgG2、IgG3、IgG4などのIgG、IgA、IgD、IgE、IgMなどいずれのクラスでもよいが、医薬として用いる場合はIgG及びIgMが好ましい。さらに本発明の抗体としてはwholeの抗体だけでなく、Fv、Fab、F(ab)2などの抗体断片や、抗体の可変領域をペプチドリンカー等のリンカーで結合させた1価または2価以上の一本鎖Fv(scFv、sc(Fv)2など)の低分子化抗体なども含まれる。
培地組成及び調製法は以下の通りである。
初発培地:哺乳動物由来成分不含培地に参考例1で調製した鰹加水分解物5 g/Lを添加し、溶解後濾過滅菌した。
流加培地:初発培地に用いる哺乳動物由来成分不含培地成分を初発培地に対し約2倍濃度とし、鰹加水分解物30 g/Lを加えて溶解後濾過滅菌した。
細胞:国際公開第2005/005636号パンフレットに記載の組換え型抗ガングリオシドGM3ヒト抗体(L612)を産生するCHO細胞株。本抗体のクラスはIgMである。
培地組成及び調製法は以下の通りである。
初発培地:哺乳動物由来成分不含培地に参考例1で調製した鰹加水分解物15 g/Lを添加し、溶解後濾過滅菌した。
流加培地:初発培地に用いる哺乳動物由来成分不含培地成分を初発培地に対し約4倍濃度とし、鰹加水分解物75 g/Lを加えて溶解後濾過滅菌した。
細胞:国際公開第92/19759号パンフレットの実施例10に記載されたヒトエロンゲーションファクターIαプロモーターを利用し、特開平8-99902号公報の参考例2に記載された方法に準じて作成したヒト型化PM-1抗体(抗ヒトIL-6レセプター抗体)を産生するCHO細胞株。本抗体のクラスはIgG1である。
培地組成及び調製法は以下の通りである。
初発培地:哺乳動物由来成分不含培地に参考例1で調製した鰹加水分解物5 g/Lを添加し、溶解後濾過滅菌した。比較対照用として鰹加水分解物を含まないものを用いた。
流加培地:哺乳動物由来成分不含培地成分を初発培地に対し2倍濃度とし、鰹加水分解物30 g/Lを加えて溶解後濾過滅菌した。比較対照用として鰹加水分解物を含まないものを用いた。
細胞:国際公開第2005/056604号パンフレットに記載の方法で作製した、MPL結合性single chain (Fv)2(sc(Fv)2)を産生する、組換えCHO細胞。
培養結果:ジャー型細胞培養装置に初発培地を加え、これに上記CHO細胞株を、3 x105 cells/mLとなるよう加えて37℃、10% CO2の条件で培養を開始した。培養3日目より流加培地を一定流速で流加し、14日目まで培養を行った。培養期間中適宜サンプリングを行った。各サンプルの培養上清について、MPLのアミノ酸配列のうちsc(Fv)2が結合する部分を用いて、BIACORE法により産生されたタンパク質濃度を測定した。図3に示すように、鰹加水分解物を含まない流加培養ではタンパク質濃度は14日間の培養で450 mg/L程度であった。これに対し、鰹加水分解物を含む溶液を流加すると、14日間の培養で760 mg/Lを超える高いタンパク質濃度を得ることができた。
魚肉として市販の鰹を使用した。鰹をミンチ状にカットしたもの840kgに水1200kgを加え、植物由来のパパイン3.2kgで、pH6.0、65℃の条件下で1時間インキュベ−トし、酵素分解を行った。次に、カビ由来のエキソペプチダーゼ3.2kgでさらに上記条件下で15時間酵素分解を行った後、95℃に加熱することで酵素を失活させた。その後遠心分離、濾過により不溶物、油分を除去、濃縮して、魚肉(鰹)の酵素分解物約150kgを調製した。
本明細書で引用した全ての刊行物、特許および特許出願をそのまま参考として本明細書にとり入れるものとする。
Claims (16)
- 初発培地で細胞の培養を開始し、さらに、少なくとも1回、細胞培養中の培地に流加培地を加える培養方法において、初発培地または流加培地の少なくとも一方に魚肉の酵素分解物又は魚肉抽出物が添加されていることを特徴とする細胞の培養方法。
- 魚肉の酵素分解物又は魚肉抽出物を添加した培地で細胞の培養を開始し、さらに、少なくとも1回、細胞培養中の培地に魚肉の酵素分解物又は魚肉抽出物を加えることを特徴とする細胞の培養方法。
- 細胞を流加培養法で培養する請求項2記載の培養方法。
- 細胞が所望のタンパク質をコードする遺伝子を導入したものである請求項1〜3のいずれかに記載の培養方法。
- 所望のタンパク質が抗体である請求項4記載の培養方法。
- 細胞が動物細胞である請求項1〜5のいずれかに記載の培養方法。
- 細胞が哺乳動物細胞である請求項6記載の培養方法。
- 哺乳動物細胞がCHO細胞である請求項7記載の培養方法。
- 初発培地で細胞の培養を開始し、さらに、少なくとも1回、細胞培養中の培地に流加培地を加えて細胞を培養することにより、タンパク質を製造する方法であって、初発培地または流加培地の少なくとも一方に魚肉の酵素分解物又は魚肉抽出物が添加されていることを特徴とする製造方法。
- タンパク質を製造する方法であって、魚肉の酵素分解物又は魚肉抽出物を添加した培地で細胞の培養を開始し、さらに、少なくとも1回、細胞培養中の培地に魚肉の酵素分解物又は魚肉抽出物を加えることを特徴とする製造方法。
- 細胞を流加培養法で培養する請求項10記載の製造方法。
- 細胞が所望のタンパク質をコードする遺伝子を導入したものである請求項9〜11のいずれかに記載の製造方法。
- 所望のタンパク質が抗体である請求項12記載の製造方法。
- 細胞が動物細胞である請求項9〜13のいずれかに記載の製造方法。
- 細胞が哺乳動物細胞である請求項14記載の製造方法。
- 哺乳動物細胞がCHO細胞である請求項15記載の製造方法。
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| CA2284271C (en) | 1997-03-21 | 2012-05-08 | Chugai Seiyaku Kabushiki Kaisha | A preventive or therapeutic agent for sensitized t cell-mediated diseases comprising il-6 antagonist as an active ingredient |
| UA80091C2 (en) | 2001-04-02 | 2007-08-27 | Chugai Pharmaceutical Co Ltd | Remedies for infant chronic arthritis-relating diseases and still's disease which contain an interleukin-6 (il-6) antagonist |
| DK1475101T3 (da) | 2002-02-14 | 2011-01-10 | Chugai Pharmaceutical Co Ltd | Antistof-holdige farmaceutiske opløsninger |
| GB2401040A (en) * | 2003-04-28 | 2004-11-03 | Chugai Pharmaceutical Co Ltd | Method for treating interleukin-6 related diseases |
| EP3269738A1 (en) * | 2004-03-24 | 2018-01-17 | Chugai Seiyaku Kabushiki Kaisha | Subtypes of humanized antibody against interleukin-6 receptor |
| ES2579957T5 (es) * | 2006-07-14 | 2024-12-10 | Patheon Holdings I B V | Proceso mejorado para el cultivo de células |
| PE20091174A1 (es) | 2007-12-27 | 2009-08-03 | Chugai Pharmaceutical Co Ltd | Formulacion liquida con contenido de alta concentracion de anticuerpo |
| EP2130906B1 (en) * | 2008-06-04 | 2014-03-12 | BioSilta Oy | Method for the supply of growth components to cell cultures |
| KR102071834B1 (ko) | 2009-10-26 | 2020-01-30 | 에프. 호프만-라 로슈 아게 | 글리코실화된 면역글로불린의 제조 방법 |
| KR102116202B1 (ko) | 2010-11-08 | 2020-05-28 | 제넨테크, 인크. | 피하 투여용 항―il―6 수용체 항체 |
| WO2015000865A1 (en) | 2013-07-04 | 2015-01-08 | F. Hoffmann-La Roche Ag | Interference-suppressed immunoassay to detect anti-drug antibodies in serum samples |
| PL3865563T3 (pl) | 2014-11-25 | 2024-01-29 | Corning Incorporated | Materiały i sposoby do przedłużania pożywki do hodowli komórkowej |
| AR104050A1 (es) * | 2015-03-26 | 2017-06-21 | Chugai Pharmaceutical Co Ltd | Proceso de producción con iones de cobre controlados |
| US11484591B2 (en) | 2016-02-22 | 2022-11-01 | Ohio State Innovation Foundation | Chemoprevention using controlled-release formulations of anti-interleukin 6 agents, synthetic vitamin A analogues or metabolites, and estradiol metabolites |
| AU2018234844B2 (en) | 2017-03-17 | 2024-01-25 | Ohio State Innovation Foundation | Nanoparticles for delivery of chemopreventive agents |
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| WO2020201362A2 (en) | 2019-04-02 | 2020-10-08 | INSERM (Institut National de la Santé et de la Recherche Médicale) | Methods of predicting and preventing cancer in patients having premalignant lesions |
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| KR20130101161A (ko) | 2013-09-12 |
| PL1835022T3 (pl) | 2015-06-30 |
| EP1835022A1 (en) | 2007-09-19 |
| EP2843040A1 (en) | 2015-03-04 |
| CN101061215A (zh) | 2007-10-24 |
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